public class GoodsVan {
    public static void main(String[] args) {
        int vanWidth = 2;
        int vanLength = 4;
        double boxWidth = 1.5;
        double boxLength = 1.5;
        int boxNumber = (int)(vanWidth/boxWidth) * (int)(vanLength/boxLength);
        System.out.println("载货区一层可以放" + boxNumber + "个箱子！");
    }
}